flutter · kenzieschmoll · Jul 21, 2026 · Jul 21, 2026 · Jul 21, 2026 · Jul 21, 2026
@@ -170,10 +170,11 @@ dart_code_metrics:
       # devtools_app/.
       # TODO(https://github.com/flutter/devtools/issues/9906) remove these
       # excludes as findings are resolved.
-      - integration_test/**
-      # Investigate internal usages of inspector_controller before removing.
+      # Investigate internal usages of inspector logic before removing.
       - lib/src/screens/inspector/**_controller.dart
-      - lib/src/shared/**
+      - lib/src/shared/diagnostics/inspector_service.dart
+      - lib/src/shared/diagnostics/diagnostics_node.dart
+
       - test/**
   rules:
 #    - arguments-ordering Too strict

@@ -5,10 +5,10 @@
 // Note: this test was modeled after the example test from Flutter Gallery:
 // https://github.com/flutter/gallery/blob/master/test_benchmarks/benchmarks_test.dart
 
-import 'dart:convert' show JsonEncoder;
 import 'dart:io';
 
 import 'package:collection/collection.dart';
+import 'package:devtools_app/src/shared/primitives/utils.dart';
 import 'package:devtools_test/helpers.dart';
 import 'package:test/test.dart';
 import 'package:web_benchmarks/metrics.dart';
@@ -92,10 +92,7 @@ Future<void> _runBenchmarks({bool useWasm = false}) async {
 
   stdout.writeln('Web benchmark tests finished.');
 
-  expect(
-    const JsonEncoder.withIndent('  ').convert(taskResult.toJson()),
-    isA<String>(),
-  );
+  expect(prettyPrintJson(taskResult.toJson()), isA<String>());
   expect(taskResult.scores.keys, hasLength(DevToolsBenchmark.values.length));
 
   for (final devToolsBenchmark in DevToolsBenchmark.values) {

@@ -5,6 +5,7 @@
 import 'dart:convert';
 import 'dart:io';
 
+import 'package:devtools_app/src/shared/primitives/utils.dart';
 import 'package:web_benchmarks/analysis.dart';
 
 import 'utils.dart';
@@ -61,6 +62,6 @@ void compareBenchmarks(
   stdout.writeln('Baseline comparison finished.');
   stdout
     ..writeln('==== Comparison with baseline $baselineSource ====')
-    ..writeln(const JsonEncoder.withIndent('  ').convert(delta.toJson()))
+    ..writeln(prettyPrintJson(delta.toJson()))
     ..writeln('==== End of baseline comparison ====');
 }
@@ -389,11 +389,9 @@ final class FlutterDaemonConstants {
   static const paramsKey = 'params';
   static const traceKey = 'trace';
   static const wsUriKey = 'wsUri';
-  static const pidKey = 'pid';
   static const appStopKey = 'app.stop';
   static const appStartedKey = 'app.started';
   static const appDebugPortKey = 'app.debugPort';
-  static const daemonConnectedKey = 'daemon.connected';
 }
 
 enum TestAppDevice {

@@ -3,11 +3,12 @@
 // found in the LICENSE file or at https://developers.google.com/open-source/licenses/bsd.
 
 import 'dart:collection';
-import 'dart:convert';
 
 import 'package:collection/collection.dart';
 import 'package:string_scanner/string_scanner.dart';
 
+import '../../shared/primitives/utils.dart';
+
 //TODO(jacobr): cleanup.
 /// A namespace for [SpanParser] utilities.
 extension SpanParser on Never {
@@ -68,7 +69,7 @@ class Grammar {
 
   @override
   String toString() {
-    return const JsonEncoder.withIndent('  ').convert({
+    return prettyPrintJson({
       'name': name,
       'scopeName': scopeName,
       'topLevelMatcher': topLevelMatcher.toJson(),

@@ -120,8 +120,7 @@ class InspectorTreeController extends DisposableController
   /// [InspectorTreeController].
   final int? gaId;
 
-  InspectorTreeNode createNode() =>
-      InspectorTreeNode(whenDirty: _handleDirtyNode);
+  InspectorTreeNode createNode() => InspectorTreeNode();
 
   SearchTargetType _searchTarget = SearchTargetType.widget;
   int _rootSetCount = 0;
@@ -284,15 +283,6 @@ class InspectorTreeController extends DisposableController
     }
   }
 
-  /// Resets the state if the root has been marked as dirty.
-  void _handleDirtyNode(InspectorTreeNode node) {
-    if (node == root) {
-      _cachedSelectedRow = null;
-      lastContentWidth = null;
-      _updateRows();
-    }
-  }
-
   void setSearchTarget(SearchTargetType searchTarget) {
     _searchTarget = searchTarget;
     refreshSearchMatches();
@@ -448,10 +438,6 @@ class InspectorTreeController extends DisposableController
     return inspectorRowHeight * index;
   }
 
-  void nodeChanged(InspectorTreeNode node) {
-    node.isDirty = true;
-  }
-
   void removeNodeFromParent(InspectorTreeNode node) {
     node.parent?.removeChild(node);
   }
@@ -767,7 +753,6 @@ class InspectorTreeController extends DisposableController
           setupChildren(diagnostic, treeNode, children, expandChildren: true);
           refreshTree(
             updateTreeAction: () {
-              nodeChanged(treeNode);
               if (treeNode == selection) {
                 expandPath(treeNode);
               }

@@ -1016,8 +1016,6 @@ class LogData with SearchableDataMixin {
   String? _details;
   Future<String> Function()? detailsComputer;
 
-  static const prettyPrinter = JsonEncoder.withIndent('  ');
-
   String? get details => _details;
 
   bool get needsComputing => !detailsComputed.isCompleted;
@@ -1040,10 +1038,9 @@ class LogData with SearchableDataMixin {
     }
 
     try {
-      return prettyPrinter
-          .convert(jsonDecode(details!))
-          .replaceAll(r'\n', '\n')
-          .trim();
+      return prettyPrintJson(
+        jsonDecode(details!) as Object?,
+      ).replaceAll(r'\n', '\n').trim();
     } catch (_) {
       return details?.trim();
     }

@@ -3,6 +3,7 @@
 // found in the LICENSE file or at https://developers.google.com/open-source/licenses/bsd.
 
 // ignore_for_file: non_constant_identifier_names
+// ignore_for_file: unused-code, platform specific imports.
 
 import 'dart:async';
 

@@ -43,8 +43,6 @@ bool get isAnalyticsEnabled =>
 /// Whether the analytics controller has been initialized.
 bool get isAnalyticsControllerInitialized => _analyticsController != null;
 
-typedef AsyncAnalyticsCallback = FutureOr<void> Function();
-
 class AnalyticsController {
   AnalyticsController({
     required bool enabled,
@@ -67,6 +65,7 @@ class AnalyticsController {
   ValueListenable<bool> get shouldPrompt => _shouldPrompt;
   final ValueNotifier<bool> _shouldPrompt;
 
+  @visibleForTesting
   bool get analyticsInitialized => _analyticsInitialized;
   bool _analyticsInitialized = false;
 

@@ -85,7 +85,6 @@ const slowAnimation = 'slowAnimation';
 const slowAnimationDocs = 'slowAnimationDocs';
 const repaintRainbow = 'repaintRainbow';
 const repaintRainbowDocs = 'repaintRainbowDocs';
-const debugBanner = 'debugBanner';
 const togglePlatform = 'togglePlatform';
 const brightnessOverride = 'brightnessOverride';
 const highlightOversizedImages = 'highlightOversizedImages';
@@ -99,13 +98,6 @@ const inspectorSettings = 'inspectorSettings';
 const loggingSettings = 'loggingSettings';
 const refreshPubRoots = 'refreshPubRoots';
 
-enum InspectorDetailsViewType { layoutExplorer, widgetDetailsTree }
-
-final defaultDetailsViewToLayoutExplorer =
-    InspectorDetailsViewType.layoutExplorer.name;
-final defaultDetailsViewToWidgetDetails =
-    InspectorDetailsViewType.widgetDetailsTree.name;
-
 enum HomeScreenEvents { connectToApp, connectToNewApp, viewVmFlags }
 
 // Logging UX actions:

@@ -7,7 +7,6 @@ part of '../constants.dart';
 enum CpuProfilerEvents {
   profileGranularity,
   loadAllCpuSamples,
-  profileAppStartUp,
   cpuProfileFlameChartHelp,
   cpuProfileProcessingTime,
   openDataFile,

@@ -20,9 +20,6 @@ enum PerformanceEvents {
   disableOpacityLayers,
   disablePhysicalShapeLayers,
   countWidgetBuilds('trackRebuildWidgets'),
-  collectRasterStats,
-  clearRasterStats,
-  fullScreenLayerImage,
   clearRebuildStats,
   perfettoLoadTrace,
   perfettoScrollToTimeRange,
@@ -55,6 +52,5 @@ enum PerformanceDocs {
   shaderCompilationDocs,
   shaderCompilationDocsTooltipLink,
   impellerDocsLink,
-  impellerDocsLinkFromRasterStats,
   platformChannelsDocs,
 }
@@ -74,7 +74,6 @@ class InspectorScreenMetrics extends ScreenAnalyticsMetrics {
   });
 
   static const summaryTreeGaId = 0;
-  static const detailsTreeGaId = 1;
 
   /// The number of times the root has been set, since the
   /// [InspectorTreeController] with id [inspectorTreeControllerId], has been

@@ -54,6 +54,7 @@ class PaintCharacteristics {
 
   /// If specified Y scale is computed and min value is fixed.
   /// Will assert if new data point is less than min specified.
+  // ignore: unused-code, TODO(https://github.com/flutter/devtools/issues/9910) seems like a bug.
   double? fixedMinY;
 
   /// If specified Y scale is computed and max value is fixed.
@@ -88,11 +89,7 @@ class PaintCharacteristics {
 }
 
 class Trace {
-  Trace(this.controller, this._chartType, this.characteristics) {
-    final minY = characteristics.fixedMinY ?? 0.0;
-    final maxY = characteristics.fixedMaxY ?? 0.0;
-    yAxis = AxisScale(minY, maxY, 30);
-  }
+  Trace(this.controller, this._chartType, this.characteristics);
 
   final ChartController controller;
 
@@ -113,6 +110,7 @@ class Trace {
   /// -------------------------------
   late bool stacked;
 
+  // ignore: unused-code, false positive used in asserts.
   String? name;
 
   double dataYMax = 0;
@@ -155,8 +153,6 @@ class Trace {
 
   ChartType get chartType => _chartType;
 
-  AxisScale? yAxis;
-
   void clearData() {
     _data.clear();
     controller.dirty = true;
@@ -173,7 +169,6 @@ class Trace {
       );
     } else if (datum.y > dataYMax) {
       dataYMax = datum.y.toDouble();
-      yAxis = AxisScale(0, dataYMax, 30);
     }
 
     if (datum.y > controller.yMaxValue) {
@@ -298,7 +293,6 @@ class AxisScale {
       fraction = 0;
     }
     return AxisScale._(
-      minPoint: minPoint,
       maxPoint: maxPoint,
       maxTicks: maxTicks,
       tickSpacing: tickSpacing,
@@ -308,16 +302,17 @@ class AxisScale {
   }
 
   AxisScale._({
-    required this.minPoint,
     required this.maxPoint,
     required this.maxTicks,
     required this.tickSpacing,
     required this.labelUnitExponent,
     required this.labelTicks,
   });
 
-  final double minPoint, maxPoint;
+  @visibleForTesting
+  final double maxPoint;
 
+  @visibleForTesting
   final double maxTicks;
 
   final double tickSpacing;